Question: What is the headquarters of the International Hydrographic Organization that has mayor Serge Telle?
Paraphrase: What is the headquarters of the International Hydrographic Organization that has mayor Serge Telle?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q233611 wdt:P159 ?answer . ?answer wdt:P6 wd:Q3479546}